9. Consider Figure FE 3. Compute the difference in the primary consolidation settlement. Further, if foundation B is to be loaded with an additional 150 kN, suggest an increase in dimension for said foundation if a differential settlement of 20 mm is not to be exceeded. You may use the equation for primary consolidation settlement of HomvAoy. 780 kN 780 kN Foundation A Foundation B 1.5 m x 1.5 m 1.5 m x 1.5 m Sànd 3 m 2.8 1.2 m Clay, m = 0.7 m2/MN: Gravel Figure FE 3-Borrowed from Soil Mechanics and Foundations, Muni Budhu

9. Consider Figure FE 3. Compute the difference in the primary consolidation settlement. Further, if foundation B is to be loaded with an additional 150 kN, suggest an increase in dimension for said foundation if a differential settlement of 20 mm is not to be exceeded. You may use the equation for primary consolidation settlement of HomvAoy. 780 kN 780 kN Foundation A Foundation B 1.5 m x 1.5 m 1.5 m x 1.5 m Sànd 3 m 2.8 1.2 m Clay, m = 0.7 m2/MN: Gravel Figure FE 3-Borrowed from Soil Mechanics and Foundations, Muni Budhu

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter8: Mat Foundations

Section: Chapter Questions

Problem 8.7P

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Ignoring the given Es-data and considering that the supporting soil is clean, normally consolidated sand with the following available data: A rigid shallow foundation 1x 2m is shown in the scheme. Cakulate the elastic setlement at the centre of the foundation. q=150Pa 1m 10000 Sand -03 2 8000 12000 www Scheme 1.2 Im Sand 2,m 0-25 7 25-65 11 65-10.0 14 Scheme 13 Assume the rodk layer exists at depth z- 10m. C Expand Transcribed Image Text A rigid shallow foundation 1x 2 m is shown in the scheme. Calculate the elastic settlement at the centre of the foundation. q= 150 kPa im E, (kPa) 1m. 110000 Sand Hs=0.3 2 8000 34 12000 Rock Scheme 3.21m g=150 kPa z, m Sand Hs =0.3 0-2.5 7 2.5- 6.5 11 6.5- 10.0 14 Scheme 3.3 Assume the rock layer exists at depth z= 10 m. (u) z
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A clay layer, whose total settlement under a given loading is expected to be 16 cmsettles 4 cm at the end of 1 month after the application of load increment. How manymonths will be required to reach a settlement of 8 cm ? Assume to have doubledrainage
Determine the consolidation settlement ofthe 4-m thick clay layer shown in the figurethat will result from the load carried by thefooting measuring 3 m x 1.5 m in the figure.Assume the clay to be normally consolidatedand the load of footing results to an increasein pressure of 23.2 kPa, 12.22 kPa, and 6.1kPa at the top, mid-height, and bottomportion, respectively of the clay layer.a) Calculate the overburden pressure at thebase of the footing in kPab) Calculate the initial effective stress at themid-height of the clay layerc) Calculate the consolidation settlement ofthe clay layer
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The soil profile for a future building construction site is shown in the following figure. The proposed footing is a 6.0 m diameter circular one with q = 200 kN/m² as shown. Estimate the final primary consolidation settlement of the 5 m thick normally consolidated clay layer. r = 3.0 m - q = 200 kN/m² 5.3 20: Sand Ydry 6.8 12.5 17.5 z, m -0-- = 18.6 kN/m³ W.T. Sand Ywet = 19.0 kN/m³ Clay Ywet = 18.5 kN/m³ eo = 0.86, LL = 42, PL = 18 Gravel Ywet = 19.2 kN/m³
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